./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_61_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_61_bad.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1280eedf37cdcd0a55d50ddad68050c61c16bd95d7a2c9d9060d4388e6bafc10 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 18:24:42,604 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 18:24:42,650 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2025-03-17 18:24:42,653 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 18:24:42,653 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 18:24:42,669 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 18:24:42,670 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 18:24:42,670 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 18:24:42,670 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 18:24:42,670 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 18:24:42,670 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 18:24:42,670 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 18:24:42,670 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 18:24:42,670 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 18:24:42,671 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 18:24:42,671 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 18:24:42,671 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 18:24:42,671 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 18:24:42,671 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 18:24:42,671 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 18:24:42,671 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 18:24:42,671 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 18:24:42,671 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 18:24:42,671 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 18:24:42,671 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 18:24:42,671 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 18:24:42,671 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 18:24:42,671 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 18:24:42,671 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 18:24:42,671 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 18:24:42,671 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 18:24:42,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 18:24:42,672 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 18:24:42,672 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 18:24:42,672 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 18:24:42,672 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 18:24:42,672 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 18:24:42,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 18:24:42,672 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 18:24:42,672 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 18:24:42,672 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 18:24:42,672 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 18:24:42,672 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1280eedf37cdcd0a55d50ddad68050c61c16bd95d7a2c9d9060d4388e6bafc10 [2025-03-17 18:24:43,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 18:24:43,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 18:24:43,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 18:24:43,010 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 18:24:43,010 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 18:24:43,011 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_61_bad.i [2025-03-17 18:24:44,155 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cf779caf/3f2d0aac7a0f4e738e03534b6b6b863c/FLAG4689dc671 [2025-03-17 18:24:44,487 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 18:24:44,487 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_61_bad.i [2025-03-17 18:24:44,504 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cf779caf/3f2d0aac7a0f4e738e03534b6b6b863c/FLAG4689dc671 [2025-03-17 18:24:44,738 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cf779caf/3f2d0aac7a0f4e738e03534b6b6b863c [2025-03-17 18:24:44,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 18:24:44,742 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 18:24:44,745 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 18:24:44,745 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 18:24:44,754 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 18:24:44,755 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:24:44" (1/1) ... [2025-03-17 18:24:44,755 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d207b25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:44, skipping insertion in model container [2025-03-17 18:24:44,757 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:24:44" (1/1) ... [2025-03-17 18:24:44,798 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 18:24:45,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 18:24:45,341 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 18:24:45,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 18:24:45,479 INFO L204 MainTranslator]: Completed translation [2025-03-17 18:24:45,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:45 WrapperNode [2025-03-17 18:24:45,480 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 18:24:45,481 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 18:24:45,481 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 18:24:45,481 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 18:24:45,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:45" (1/1) ... [2025-03-17 18:24:45,498 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:45" (1/1) ... [2025-03-17 18:24:45,510 INFO L138 Inliner]: procedures = 499, calls = 28, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 65 [2025-03-17 18:24:45,511 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 18:24:45,511 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 18:24:45,511 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 18:24:45,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 18:24:45,517 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:45" (1/1) ... [2025-03-17 18:24:45,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:45" (1/1) ... [2025-03-17 18:24:45,519 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:45" (1/1) ... [2025-03-17 18:24:45,533 INFO L175 MemorySlicer]: Split 1 memory accesses to 1 slices as follows [1]. 100 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1]. The 0 writes are split as follows [0]. [2025-03-17 18:24:45,534 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:45" (1/1) ... [2025-03-17 18:24:45,534 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:45" (1/1) ... [2025-03-17 18:24:45,536 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:45" (1/1) ... [2025-03-17 18:24:45,537 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:45" (1/1) ... [2025-03-17 18:24:45,538 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:45" (1/1) ... [2025-03-17 18:24:45,538 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:45" (1/1) ... [2025-03-17 18:24:45,540 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 18:24:45,543 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 18:24:45,544 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 18:24:45,544 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 18:24:45,544 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:45" (1/1) ... [2025-03-17 18:24:45,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 18:24:45,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 18:24:45,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 18:24:45,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 18:24:45,589 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2025-03-17 18:24:45,589 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2025-03-17 18:24:45,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 18:24:45,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 18:24:45,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 18:24:45,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 18:24:45,708 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 18:24:45,710 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 18:24:45,821 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2025-03-17 18:24:45,823 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 18:24:45,831 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 18:24:45,833 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 18:24:45,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:24:45 BoogieIcfgContainer [2025-03-17 18:24:45,833 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 18:24:45,835 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 18:24:45,836 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 18:24:45,839 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 18:24:45,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:24:44" (1/3) ... [2025-03-17 18:24:45,841 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b975956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:24:45, skipping insertion in model container [2025-03-17 18:24:45,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:45" (2/3) ... [2025-03-17 18:24:45,842 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b975956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:24:45, skipping insertion in model container [2025-03-17 18:24:45,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:24:45" (3/3) ... [2025-03-17 18:24:45,843 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_61_bad.i [2025-03-17 18:24:45,857 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 18:24:45,858 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_sub_61_bad.i that has 2 procedures, 18 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-17 18:24:45,901 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 18:24:45,909 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@53cbc49c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 18:24:45,910 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-17 18:24:45,912 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 18:24:45,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-17 18:24:45,917 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 18:24:45,917 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 18:24:45,918 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-17 18:24:45,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 18:24:45,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1837684405, now seen corresponding path program 1 times [2025-03-17 18:24:45,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 18:24:45,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331126154] [2025-03-17 18:24:45,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 18:24:45,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 18:24:46,014 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 18:24:46,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 18:24:46,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 18:24:46,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 18:24:46,043 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 18:24:46,053 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 18:24:46,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 18:24:46,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 18:24:46,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 18:24:46,082 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 18:24:46,087 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 18:24:46,088 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-03-17 18:24:46,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-03-17 18:24:46,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 18:24:46,092 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-17 18:24:46,109 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 18:24:46,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 06:24:46 BoogieIcfgContainer [2025-03-17 18:24:46,112 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 18:24:46,113 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 18:24:46,113 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 18:24:46,113 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 18:24:46,113 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:24:45" (3/4) ... [2025-03-17 18:24:46,114 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-17 18:24:46,115 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 18:24:46,116 INFO L158 Benchmark]: Toolchain (without parser) took 1374.12ms. Allocated memory is still 142.6MB. Free memory was 102.9MB in the beginning and 77.9MB in the end (delta: 25.0MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. [2025-03-17 18:24:46,116 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 116.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 18:24:46,116 INFO L158 Benchmark]: CACSL2BoogieTranslator took 735.45ms. Allocated memory is still 142.6MB. Free memory was 102.9MB in the beginning and 43.4MB in the end (delta: 59.5MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2025-03-17 18:24:46,116 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.68ms. Allocated memory is still 142.6MB. Free memory was 43.4MB in the beginning and 40.9MB in the end (delta: 2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 18:24:46,116 INFO L158 Benchmark]: Boogie Preprocessor took 28.65ms. Allocated memory is still 142.6MB. Free memory was 40.9MB in the beginning and 38.9MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 18:24:46,117 INFO L158 Benchmark]: IcfgBuilder took 290.00ms. Allocated memory is still 142.6MB. Free memory was 38.9MB in the beginning and 94.7MB in the end (delta: -55.8MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2025-03-17 18:24:46,117 INFO L158 Benchmark]: TraceAbstraction took 277.05ms. Allocated memory is still 142.6MB. Free memory was 94.7MB in the beginning and 77.9MB in the end (delta: 16.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 18:24:46,117 INFO L158 Benchmark]: Witness Printer took 2.51ms. Allocated memory is still 142.6MB. Free memory is still 77.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 18:24:46,118 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 116.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 735.45ms. Allocated memory is still 142.6MB. Free memory was 102.9MB in the beginning and 43.4MB in the end (delta: 59.5MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.68ms. Allocated memory is still 142.6MB. Free memory was 43.4MB in the beginning and 40.9MB in the end (delta: 2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.65ms. Allocated memory is still 142.6MB. Free memory was 40.9MB in the beginning and 38.9MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 290.00ms. Allocated memory is still 142.6MB. Free memory was 38.9MB in the beginning and 94.7MB in the end (delta: -55.8MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * TraceAbstraction took 277.05ms. Allocated memory is still 142.6MB. Free memory was 94.7MB in the beginning and 77.9MB in the end (delta: 16.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 2.51ms. Allocated memory is still 142.6MB. Free memory is still 77.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1555]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1573, overapproximation of fgets at line 1571. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1562] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={1:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1562] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1563] CALL CWE191_Integer_Underflow__int_fgets_sub_61_bad() [L1551] int data; [L1552] data = 0 [L1553] CALL, EXPR CWE191_Integer_Underflow__int_fgets_sub_61b_badSource(data) [L1570] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1571] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1573] data = atoi(inputBuffer) [L1580] return data; [L1553] RET, EXPR CWE191_Integer_Underflow__int_fgets_sub_61b_badSource(data) [L1553] data = CWE191_Integer_Underflow__int_fgets_sub_61b_badSource(data) [L1555] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1555]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 24 edges, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-03-17 18:24:46,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_61_bad.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1280eedf37cdcd0a55d50ddad68050c61c16bd95d7a2c9d9060d4388e6bafc10 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 18:24:48,228 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 18:24:48,305 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2025-03-17 18:24:48,309 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 18:24:48,309 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 18:24:48,309 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2025-03-17 18:24:48,332 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 18:24:48,335 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 18:24:48,335 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 18:24:48,336 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 18:24:48,336 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 18:24:48,336 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 18:24:48,336 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 18:24:48,337 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 18:24:48,337 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 18:24:48,337 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 18:24:48,338 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 18:24:48,338 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 18:24:48,338 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 18:24:48,338 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 18:24:48,338 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 18:24:48,338 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 18:24:48,338 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 18:24:48,338 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-17 18:24:48,338 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 18:24:48,338 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-17 18:24:48,339 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 18:24:48,339 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 18:24:48,339 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 18:24:48,339 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 18:24:48,339 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 18:24:48,339 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 18:24:48,339 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 18:24:48,339 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 18:24:48,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 18:24:48,339 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 18:24:48,339 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 18:24:48,339 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 18:24:48,339 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 18:24:48,339 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-17 18:24:48,339 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-17 18:24:48,339 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 18:24:48,339 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 18:24:48,340 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 18:24:48,340 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 18:24:48,340 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1280eedf37cdcd0a55d50ddad68050c61c16bd95d7a2c9d9060d4388e6bafc10 [2025-03-17 18:24:48,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 18:24:48,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 18:24:48,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 18:24:48,575 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 18:24:48,575 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 18:24:48,577 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_61_bad.i [2025-03-17 18:24:49,769 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2c0831ae/a44ef581700741129c82ec0c6ece04ee/FLAG92f4be299 [2025-03-17 18:24:50,067 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 18:24:50,067 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_61_bad.i [2025-03-17 18:24:50,087 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2c0831ae/a44ef581700741129c82ec0c6ece04ee/FLAG92f4be299 [2025-03-17 18:24:50,097 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2c0831ae/a44ef581700741129c82ec0c6ece04ee [2025-03-17 18:24:50,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 18:24:50,099 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 18:24:50,100 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 18:24:50,100 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 18:24:50,102 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 18:24:50,103 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:24:50" (1/1) ... [2025-03-17 18:24:50,103 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b5495c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:50, skipping insertion in model container [2025-03-17 18:24:50,104 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:24:50" (1/1) ... [2025-03-17 18:24:50,133 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 18:24:50,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 18:24:50,616 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 18:24:50,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 18:24:50,786 INFO L204 MainTranslator]: Completed translation [2025-03-17 18:24:50,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:50 WrapperNode [2025-03-17 18:24:50,787 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 18:24:50,788 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 18:24:50,788 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 18:24:50,788 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 18:24:50,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:50" (1/1) ... [2025-03-17 18:24:50,806 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:50" (1/1) ... [2025-03-17 18:24:50,823 INFO L138 Inliner]: procedures = 504, calls = 28, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 63 [2025-03-17 18:24:50,823 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 18:24:50,824 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 18:24:50,824 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 18:24:50,824 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 18:24:50,829 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:50" (1/1) ... [2025-03-17 18:24:50,829 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:50" (1/1) ... [2025-03-17 18:24:50,831 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:50" (1/1) ... [2025-03-17 18:24:50,847 INFO L175 MemorySlicer]: Split 1 memory accesses to 1 slices as follows [1]. 100 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1]. The 0 writes are split as follows [0]. [2025-03-17 18:24:50,847 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:50" (1/1) ... [2025-03-17 18:24:50,847 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:50" (1/1) ... [2025-03-17 18:24:50,853 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:50" (1/1) ... [2025-03-17 18:24:50,854 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:50" (1/1) ... [2025-03-17 18:24:50,856 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:50" (1/1) ... [2025-03-17 18:24:50,857 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:50" (1/1) ... [2025-03-17 18:24:50,858 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 18:24:50,859 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 18:24:50,859 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 18:24:50,859 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 18:24:50,860 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:50" (1/1) ... [2025-03-17 18:24:50,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 18:24:50,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 18:24:50,886 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 18:24:50,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 18:24:50,906 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2025-03-17 18:24:50,906 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2025-03-17 18:24:50,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-17 18:24:50,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 18:24:50,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 18:24:50,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 18:24:51,007 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 18:24:51,009 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 18:24:51,132 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2025-03-17 18:24:51,135 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 18:24:51,145 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 18:24:51,149 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 18:24:51,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:24:51 BoogieIcfgContainer [2025-03-17 18:24:51,149 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 18:24:51,151 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 18:24:51,151 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 18:24:51,154 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 18:24:51,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:24:50" (1/3) ... [2025-03-17 18:24:51,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ba9210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:24:51, skipping insertion in model container [2025-03-17 18:24:51,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:24:50" (2/3) ... [2025-03-17 18:24:51,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ba9210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:24:51, skipping insertion in model container [2025-03-17 18:24:51,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:24:51" (3/3) ... [2025-03-17 18:24:51,156 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_61_bad.i [2025-03-17 18:24:51,166 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 18:24:51,168 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_sub_61_bad.i that has 2 procedures, 18 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-17 18:24:51,210 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 18:24:51,220 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@14019601, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 18:24:51,220 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-17 18:24:51,223 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 18:24:51,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-17 18:24:51,228 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 18:24:51,228 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 18:24:51,229 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-17 18:24:51,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 18:24:51,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1837684405, now seen corresponding path program 1 times [2025-03-17 18:24:51,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 18:24:51,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [763059670] [2025-03-17 18:24:51,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 18:24:51,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 18:24:51,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 18:24:51,246 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 18:24:51,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 18:24:51,351 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 18:24:51,365 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 18:24:51,366 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 18:24:51,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 18:24:51,366 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 18:24:51,374 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 18:24:51,380 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 18:24:51,381 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 18:24:51,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 18:24:51,399 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-03-17 18:24:51,401 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 18:24:51,401 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-03-17 18:24:51,403 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-03-17 18:24:51,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 18:24:51,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 18:24:51,606 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-17 18:24:51,623 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 18:24:51,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 06:24:51 BoogieIcfgContainer [2025-03-17 18:24:51,626 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 18:24:51,627 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 18:24:51,627 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 18:24:51,627 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 18:24:51,628 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:24:51" (3/4) ... [2025-03-17 18:24:51,630 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-17 18:24:51,630 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 18:24:51,631 INFO L158 Benchmark]: Toolchain (without parser) took 1532.02ms. Allocated memory was 117.4MB in the beginning and 243.3MB in the end (delta: 125.8MB). Free memory was 87.6MB in the beginning and 203.8MB in the end (delta: -116.1MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2025-03-17 18:24:51,632 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 117.4MB. Free memory was 83.3MB in the beginning and 83.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 18:24:51,632 INFO L158 Benchmark]: CACSL2BoogieTranslator took 687.24ms. Allocated memory is still 117.4MB. Free memory was 87.4MB in the beginning and 65.3MB in the end (delta: 22.1MB). Peak memory consumption was 58.6MB. Max. memory is 16.1GB. [2025-03-17 18:24:51,632 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.68ms. Allocated memory is still 117.4MB. Free memory was 65.3MB in the beginning and 62.2MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 18:24:51,633 INFO L158 Benchmark]: Boogie Preprocessor took 34.64ms. Allocated memory is still 117.4MB. Free memory was 62.2MB in the beginning and 60.0MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 18:24:51,633 INFO L158 Benchmark]: IcfgBuilder took 290.28ms. Allocated memory is still 117.4MB. Free memory was 60.0MB in the beginning and 45.9MB in the end (delta: 14.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 18:24:51,634 INFO L158 Benchmark]: TraceAbstraction took 475.08ms. Allocated memory was 117.4MB in the beginning and 243.3MB in the end (delta: 125.8MB). Free memory was 44.9MB in the beginning and 204.5MB in the end (delta: -159.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 18:24:51,634 INFO L158 Benchmark]: Witness Printer took 3.42ms. Allocated memory is still 243.3MB. Free memory was 204.5MB in the beginning and 203.8MB in the end (delta: 706.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 18:24:51,635 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 117.4MB. Free memory was 83.3MB in the beginning and 83.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 687.24ms. Allocated memory is still 117.4MB. Free memory was 87.4MB in the beginning and 65.3MB in the end (delta: 22.1MB). Peak memory consumption was 58.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.68ms. Allocated memory is still 117.4MB. Free memory was 65.3MB in the beginning and 62.2MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.64ms. Allocated memory is still 117.4MB. Free memory was 62.2MB in the beginning and 60.0MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 290.28ms. Allocated memory is still 117.4MB. Free memory was 60.0MB in the beginning and 45.9MB in the end (delta: 14.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 475.08ms. Allocated memory was 117.4MB in the beginning and 243.3MB in the end (delta: 125.8MB). Free memory was 44.9MB in the beginning and 204.5MB in the end (delta: -159.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.42ms. Allocated memory is still 243.3MB. Free memory was 204.5MB in the beginning and 203.8MB in the end (delta: 706.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1555]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1573, overapproximation of fgets at line 1571. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1562] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={1:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1562] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1563] CALL CWE191_Integer_Underflow__int_fgets_sub_61_bad() [L1551] int data; [L1552] data = 0 [L1553] CALL, EXPR CWE191_Integer_Underflow__int_fgets_sub_61b_badSource(data) [L1570] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1571] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1573] data = atoi(inputBuffer) [L1580] return data; [L1553] RET, EXPR CWE191_Integer_Underflow__int_fgets_sub_61b_badSource(data) [L1553] data = CWE191_Integer_Underflow__int_fgets_sub_61b_badSource(data) [L1555] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1555]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 24 edges, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-03-17 18:24:51,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample